Spiro Kosta Antiochos

Spiro Kosta Antiochos

  • SENIOR SCIENTIST, SPACE WEATHER
  • 301.286.8849 | 301.286.1648
  • NASA/GSFC
  • Mail Code: 670
  • Greenbelt , MD 20771
  • Employer: NASA
  • Brief Bio

    Dr. Antiochos is an internationally recognized authority on solar physics and plasma physics. His research is distinguished by the development of innovative models to explain major observational problems. His work relies heavily on magnetohydrodynamic (MHD) theory and state-of-the-art numerical simulation. Dr. Antiochos has made many fundamental advances to our understanding of the Sun and Heliosphere. Among his best-known contributions are the following: He performed the original analytic and numerical calculations of chromospheric evaporation - the response of the Sun's lower atmosphere to heating in the solar corona. He proposed the cool loop model for the transition region that links the upper and lower levels of the solar atmosphere. He is one of the founders of coronal loop theory, and his ideas on coronal plasma structure and dynamics are in widespread use today. Dr. Antiochos developed the thermal nonequilibrium model for the formation of coronal condensations. It is widely believed to be the definitive explanation for how cool filaments/prominences form in the hot corona, and is the basis for most of the current studies on coronal condensation formation. Dr. Antiochos proposed the 3D sheared arcade model for prominence magnetic fields, and verified with some of the first 3D MHD simulations of solar plasma that it produces a magnetic topology capable of supporting prominence material. The model is the basis for much of the present research on prominence structure and eruption. In another seminal contribution, Dr. Antiochos demonstrated how magnetic reconnection in a multi-polar topology can produce the explosive energy release required to explain coronal mass ejections and eruptive flares. His "breakout" model has spawned great theoretical and observational interest, and is being used throughout the world for the interpretation of coronal eruption observations. It also has major potential for application to space weather predictions. In recent work Dr. Antiochos has derived several far-reaching theorems on the topology of the Sun's open magnetic field regions, and has shown how magnetic reconnection determines the dynamical interaction of open and closed field. This work is critical for understanding how the Sun's atmosphere and magnetic couples to the heliosphere.

    Education

    B.Sc. McGill University (1970), Honors Physics
    Ph.D. Stanford University (1976), Applied Physics

    Professional Service

    Dr. Antiochos is a member of the American Geophysical Union, the American Astronomical Society, the American Physical Society, and the International Astronomical Union. He was associate editor of JGR-Space Physics. He has served on many committees of professional societies and on advisory/review committees to NASA and the NSF, including Chair of the Solar Physics Division (SPD) of the American Astronomical Society (the professional society of US solar physicists), Chair of the NASA Solar Management and Operations Working Group (the community committee advising the NASA Solar/Heliospheric Branch), Chair of the SOLAR-B Science Working Group (the committee that defined and successfully advocated the mission), Chair of the NSF committee that reviewed the High Altitude Observatory, Chair of the AURA committee that reviewed the director of the National Solar Observatory, and Chair (two terms) of the Targeted Research and Technology (TR&T) Steering Committee Dr. Antiochos has served on the Space Studies Board of the National Research Council, on the Joint Science Definition Team for the NASA/ESA Orbiter/Sentinels mission, and on the Board of Advisors for the New Jersey Institute of Technology Center for Solar-Terrestrial Research.

    Publications

    Refereed

    Titov, V. S., Z. Miki_, J. A. Linker, R. Lionello, and S. K. Antiochos. 2011. "Magnetic Topology of Coronal Hole Linkages." The Astrophysical Journal, 731: 111 [Full Text (Link)] [10.1088/0004-637X/731/2/111]

    Linker, J. A., R. Lionello, Z. Miki_, V. S. Titov, and S. K. Antiochos. 2011. "The Evolution of Open Magnetic Flux Driven by Photospheric Dynamics." The Astrophysical Journal, 731: 110 [Full Text (Link)] [10.1088/0004-637X/731/2/110]

    Gruesbeck, J. R., S. T. Lepri, T. H. Zurbuchen, and S. K. Antiochos. 2011. "Constraints on Coronal Mass Ejection Evolution from in Situ Observations of Ionic Charge States." The Astrophysical Journal, 730: 103 [Full Text (Link)] [10.1088/0004-637X/730/2/103]

    Antiochos, S. K., Z. Miki_, V. S. Titov, R. Lionello, and J. A. Linker. 2011. "A Model for the Sources of the Slow Solar Wind." The Astrophysical Journal, 731: 112 [Full Text (Link)] [10.1088/0004-637X/731/2/112]

    Leake, J. E., M. Linton, and S. Antiochos. 2010. "Tests of Dynamical Flux Emergence as a Mechanism for CME Initiation." Bulletin of the American Astronomical Society, 41: #314.02-.

    Mikic, Z., V. S. Titov, J. A. Linker, et al. R. Lionello, P. Riley, and S. Antiochos. 2010. "Interpreting Small-Scale Structure from High Resolution Global MHD Simulations." Bulletin of the American Astronomical Society, 41: #405.03-.

    Rachmeler, L. A., E. Pariat, C. E. DeForest, S. Antiochos, and T. Torok. 2010. "Symmetric Coronal Jets: A Reconnection-controlled Study." The Astrophysical Journal, 715: 1556-1565 [10.1088/0004-637X/715/2/1556]

    Kramar, M., J. Davila, H. Xie, and S. Antiochos. 2009. "On The 3D Structure of the Pre- and After CME Coronal Streamer Belt." AAS/Solar Physics Division Meeting #40, 40: #22.11-.

    Vourlidas, A., S. Patsourakos, E. Pariat, and S. Antiochos. 2008. "Understanding the Initiation of Polar Coronal Jets with STEREO/SECCHI Stereoscopic Observations." AGU Spring Meeting Abstracts, A2-:

    Antiochos, S. 2008. "Topological Origins of the Slow Solar Wind." AGU Fall Meeting Abstracts, 7-:

    Pariat, E., S. Antiochos, C. R. DeVore, and S. Patsourakos. 2008. "3D Numerical Simulation of a New Model for Coronal Jets." European Solar Physics Meeting, 12: 3-.

    MacNeice, P., J. Gao, and S. K. Antiochos. 2006. "A numerical simulation of an asymmetric breakout model for CMEs." AGU,

    Karpen, J., S. Antiochos, and J. Klimchuk. 2005. "The Origin of High-Speed Motions and Threads in Solar Prominences."

    Patsourakos, S., S. Antiochos, and J. Klimchuk. 2004. "Bright EUV Knots in Solar Flare Loops: Constraints on Coronal Heating."

    Antiochos, S. 2004. "Reconnection in solar flares and coronal mass ejections." 35th COSPAR Scientific Assembly, 35: 2381-.

    Gao, J., P. MacNeice, and S. Antiochos. 2004. "Simulating The Breakout Model In An Asymmetric Configuration." AGU Fall Meeting Abstracts, A1151-:

    Antiochos, S. 2002. "CME/Flare energy release." 34th COSPAR Scientific Assembly, 34:

    Dahlburg, R., J. Klimchuk, and S. Antiochos. 2002. "Coronal energy release via explosive magnetic reconnection." 34th,

    Antiochos, S. 2001. "The Magnetic Origins of Coronal Mass Ejections." 5th Hellenic Astronomical Conference,

    MacNeice, P., D. S. Spicer, and S. Antiochos. 1999. "A Model for Prominence Mass and Dynamics." 8th SOHO Workshop: Plasma Dynamics and Diagnostics in the Solar Transition Region and Corona, 446: 457-.

    Schmieder, B., Z. Mouradian, L. Golub, and S. Antiochos. 1994. "Coronal Structures Observed in X-rays (NIXT) and H_alpha Surges." Proceedings of Kofu Symposium, 317-320:

    Schmieder, B., Z. Mouradian, L. Golub, and S. Antiochos. 1994. "Coronal Structures Observed in X-Rays (NIXT) and Hα Surges." Seventh European Meeting on Solar Physics, 159-:

    Ayres, T., G. Basri, T. Simon, et al. J. Stauffer, R. Stern, S. K. Antiochos, J. Bookbinder, A. Brown, G. Doschek, J. Linsky, L. Ramsey, and F. Walter. 1994. "Sleuthing the Dynamo: HST/FOS Observations of UV Emissions of Solar-Type Stars in Young Clusters." Cool Stars, Stellar Systems, and the Sun, 64: 53-55 [Full Text (Link)]

    Sturrock, P. A., G. Roumeliotis, and S. Antiochos. 1993. "Asymptotic Forms for the Energy of Force Free Magnetic-Field Configurations." Bulletin of the American Astronomical Society, 25: 1218-.

    Zolcinski, M. C., L. Kay, S. Antiochos, R. Stern, and A. B. Walker. 1982. "An IUE survey of the Hyades star cluster." NASA Conference Publication, 2338: 239-242.

    Stern, R., J. H. Underwood, M. C. Zolcinski, and S. Antiochos. 1980. "The Einstein Central Hyades Survey - a Progress Report." SAO Special Report, 389: 127-.

    Stern, R., J. Underwood, M. Zolcinski, and S. Antiochos. 1980. "Stellar Coronae in the Hyades." Bulletin of the American Astronomical Society, 12: 801-.

    Stern, R., J. H. Underwood, M. Zolcinski, and S. Antiochos. 1979. "The EINSTEIN Central Hyades Survey: A Progress Report." Bulletin of the American Astronomical Society, 11: [781-]

    Sturrock, P. A., S. Antiochos, P. Switzer, and J. Vallee. 1972. "Periodicity in the Radiofrequency Spectrum of the Pulsar CP 0328." The Astrophysical Journal, 171: [L27-10.1086/180860]

    Brief Bio

    Dr. Antiochos is an internationally recognized authority on solar physics and plasma physics. His research is distinguished by the development of innovative models to explain major observational problems. His work relies heavily on magnetohydrodynamic (MHD) theory and state-of-the-art numerical simulation. Dr. Antiochos has made many fundamental advances to our understanding of the Sun and Heliosphere. Among his best-known contributions are the following: He performed the original analytic and numerical calculations of chromospheric evaporation - the response of the Sun's lower atmosphere to heating in the solar corona. He proposed the cool loop model for the transition region that links the upper and lower levels of the solar atmosphere. He is one of the founders of coronal loop theory, and his ideas on coronal plasma structure and dynamics are in widespread use today. Dr. Antiochos developed the thermal nonequilibrium model for the formation of coronal condensations. It is widely believed to be the definitive explanation for how cool filaments/prominences form in the hot corona, and is the basis for most of the current studies on coronal condensation formation. Dr. Antiochos proposed the 3D sheared arcade model for prominence magnetic fields, and verified with some of the first 3D MHD simulations of solar plasma that it produces a magnetic topology capable of supporting prominence material. The model is the basis for much of the present research on prominence structure and eruption. In another seminal contribution, Dr. Antiochos demonstrated how magnetic reconnection in a multi-polar topology can produce the explosive energy release required to explain coronal mass ejections and eruptive flares. His "breakout" model has spawned great theoretical and observational interest, and is being used throughout the world for the interpretation of coronal eruption observations. It also has major potential for application to space weather predictions. In recent work Dr. Antiochos has derived several far-reaching theorems on the topology of the Sun's open magnetic field regions, and has shown how magnetic reconnection determines the dynamical interaction of open and closed field. This work is critical for understanding how the Sun's atmosphere and magnetic couples to the heliosphere.

    Publications

    Refereed

    Titov, V. S., Z. Miki_, J. A. Linker, R. Lionello, and S. K. Antiochos. 2011. "Magnetic Topology of Coronal Hole Linkages." The Astrophysical Journal 731 111 [Full Text (Link)] [10.1088/0004-637X/731/2/111]

    Linker, J. A., R. Lionello, Z. Miki_, V. S. Titov, and S. K. Antiochos. 2011. "The Evolution of Open Magnetic Flux Driven by Photospheric Dynamics." The Astrophysical Journal 731 110 [Full Text (Link)] [10.1088/0004-637X/731/2/110]

    Gruesbeck, J. R., S. T. Lepri, T. H. Zurbuchen, and S. K. Antiochos. 2011. "Constraints on Coronal Mass Ejection Evolution from in Situ Observations of Ionic Charge States." The Astrophysical Journal 730 103 [Full Text (Link)] [10.1088/0004-637X/730/2/103]

    Antiochos, S. K., Z. Miki_, V. S. Titov, R. Lionello, and J. A. Linker. 2011. "A Model for the Sources of the Slow Solar Wind." The Astrophysical Journal 731 112 [Full Text (Link)] [10.1088/0004-637X/731/2/112]

    Leake, J. E., M. Linton, and S. Antiochos. 2010. "Tests of Dynamical Flux Emergence as a Mechanism for CME Initiation." Bulletin of the American Astronomical Society 41 #314.02-

    Mikic, Z., V. S. Titov, J. A. Linker, et al. R. Lionello, P. Riley, and S. Antiochos. 2010. "Interpreting Small-Scale Structure from High Resolution Global MHD Simulations." Bulletin of the American Astronomical Society 41 #405.03-

    Rachmeler, L. A., E. Pariat, C. E. DeForest, S. Antiochos, and T. Torok. 2010. "Symmetric Coronal Jets: A Reconnection-controlled Study." The Astrophysical Journal 715 1556-1565 [10.1088/0004-637X/715/2/1556]

    Kramar, M., J. Davila, H. Xie, and S. Antiochos. 2009. "On The 3D Structure of the Pre- and After CME Coronal Streamer Belt." AAS/Solar Physics Division Meeting #40 40 #22.11-

    Vourlidas, A., S. Patsourakos, E. Pariat, and S. Antiochos. 2008. "Understanding the Initiation of Polar Coronal Jets with STEREO/SECCHI Stereoscopic Observations." AGU Spring Meeting Abstracts A2-

    Antiochos, S. 2008. "Topological Origins of the Slow Solar Wind." AGU Fall Meeting Abstracts 7-

    Pariat, E., S. Antiochos, C. R. DeVore, and S. Patsourakos. 2008. "3D Numerical Simulation of a New Model for Coronal Jets." European Solar Physics Meeting 12 3-

    MacNeice, P., J. Gao, and S. K. Antiochos. 2006. "A numerical simulation of an asymmetric breakout model for CMEs." AGU

    Karpen, J., S. Antiochos, and J. Klimchuk. 2005. "The Origin of High-Speed Motions and Threads in Solar Prominences."

    Patsourakos, S., S. Antiochos, and J. Klimchuk. 2004. "Bright EUV Knots in Solar Flare Loops: Constraints on Coronal Heating."

    Antiochos, S. 2004. "Reconnection in solar flares and coronal mass ejections." 35th COSPAR Scientific Assembly 35 2381-

    Gao, J., P. MacNeice, and S. Antiochos. 2004. "Simulating The Breakout Model In An Asymmetric Configuration." AGU Fall Meeting Abstracts A1151-

    Antiochos, S. 2002. "CME/Flare energy release." 34th COSPAR Scientific Assembly 34

    Dahlburg, R., J. Klimchuk, and S. Antiochos. 2002. "Coronal energy release via explosive magnetic reconnection." 34th

    Antiochos, S. 2001. "The Magnetic Origins of Coronal Mass Ejections." 5th Hellenic Astronomical Conference

    MacNeice, P., D. S. Spicer, and S. Antiochos. 1999. "A Model for Prominence Mass and Dynamics." 8th SOHO Workshop: Plasma Dynamics and Diagnostics in the Solar Transition Region and Corona 446 457-

    Schmieder, B., Z. Mouradian, L. Golub, and S. Antiochos. 1994. "Coronal Structures Observed in X-rays (NIXT) and H_alpha Surges." Proceedings of Kofu Symposium 317-320

    Schmieder, B., Z. Mouradian, L. Golub, and S. Antiochos. 1994. "Coronal Structures Observed in X-Rays (NIXT) and Hα Surges." Seventh European Meeting on Solar Physics 159-

    Ayres, T., G. Basri, T. Simon, et al. J. Stauffer, R. Stern, S. K. Antiochos, J. Bookbinder, A. Brown, G. Doschek, J. Linsky, L. Ramsey, and F. Walter. 1994. "Sleuthing the Dynamo: HST/FOS Observations of UV Emissions of Solar-Type Stars in Young Clusters." Cool Stars, Stellar Systems, and the Sun 64 53-55 [Full Text (Link)]

    Sturrock, P. A., G. Roumeliotis, and S. Antiochos. 1993. "Asymptotic Forms for the Energy of Force Free Magnetic-Field Configurations." Bulletin of the American Astronomical Society 25 1218-

    Zolcinski, M. C., L. Kay, S. Antiochos, R. Stern, and A. B. Walker. 1982. "An IUE survey of the Hyades star cluster." NASA Conference Publication 2338 239-242

    Stern, R., J. H. Underwood, M. C. Zolcinski, and S. Antiochos. 1980. "The Einstein Central Hyades Survey - a Progress Report." SAO Special Report 389 127-

    Stern, R., J. Underwood, M. Zolcinski, and S. Antiochos. 1980. "Stellar Coronae in the Hyades." Bulletin of the American Astronomical Society 12 801-

    Stern, R., J. H. Underwood, M. Zolcinski, and S. Antiochos. 1979. "The EINSTEIN Central Hyades Survey: A Progress Report." Bulletin of the American Astronomical Society 11 [781-]

    Sturrock, P. A., S. Antiochos, P. Switzer, and J. Vallee. 1972. "Periodicity in the Radiofrequency Spectrum of the Pulsar CP 0328." The Astrophysical Journal 171 [L27-10.1086/180860]

                                                                                                                                                                                            
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